Lamp.



M. I. COHEN.

LAMP.

APPLICATION IIL'ED MAY 25, 1008.

Patented June 8, 1909.

4 SHEETS-SHEET 1.

EEEEE'E M. I. COHEN.

LAMP.

QIPLIOATION FILED MAY 26, 1908.

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Patented June 8,1909.

Y\/ El: [DER flar 1's .M". I. COHEN.

LAMP. APPLICATION FILED Mn 26, 1005.

924,600. Patented June 8, 1909.

4 SHEETS-SHEET 3.

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Patented June 8, 1909.

4 SHEETS-SHEET 4.

the supply of the burning .a constant and regular flameto be main:-'tained without variation or flickering, owing "UNITED STATES PATENTOFFICE.

'MORRIS I. COHEN, OF CHICAGO, ILLINOIS.

LAMP.

Specification of Letters Patent.

Patented June a, 1909.

Application filed May 25, 1908. Serial No. 434,980.

To all whom it may concern."

Be. it known that I, MORRIS I. COHEN, a

: flow of the air to supportcombustion at a citizen of the UnitedStates, and a-resident of the city of Chicago, in the county of Cook 5and State'of Illinois, have invented certain new and usefullmprovementsin Lamps;

and I do hereby declare that the following is I a full, clear, andexactdescription of the same, reference being had to the accompanyingdrawings, and tothe letters of reference marked thereon, which form apart of this specification.

to the slight and constantly occurring variations in pressu're'of thefluid delivered to'the' burner and also to insure such satisfactoryregulation as to prevent carboniza'tion on the v bodyingmy invention andhaving the urnrnantle when used.

,The object of this invention is to provide a lamp of the classdescribed-adapted. for use either with an inverted or an upright burner,and in which a. gas chamber orreservoir is provided exposed tothe heatof the burner .or burners, and whereby uniformity .of pres: sure ismaintained at the burners even though variation'm'ay'occur in pressurewithin the main supply pipe.

It is also an ob ect of thelinvention to afford in a lamp of the'cl'a'ssdescribed adjusting means whereby the supply of the hydrocarbon vapor or'gas'may be adjusted accurately' and satisfactorily to the air supplynecessary tof support perfect combustion.

It is a'further object of'the invention to afford a construction by theuse of which a supply of air is provided both within the mantle andmixed withth'e gas or vapor to be burned, and also without the mantle,both supplies being more or less heated before coming in contact withthe mantle.

It is a further object oi'theinvention to provide a lamp'ofthe'clas's'des'e'ribed having" both an inner 'and'fan outer globe, the outer globeafl'or'ding at the bottorn an entirely closed constructionfandnecessitating the mpoint above the lamp.

The invention embraces many novel features and consists in the mattershereinafter described and more fully pointed out and defined in theappended claims.

In the drawings: Figure 1 1s a central verltical section of a lampembodying my invention and provided with a plurality of burners and inwhich the burners are directed upwardly. Fig. 2 is a 'section taken online 2-2'of'Fig. 1. l Fig. 3 is a longitudinal, frag- Inenta'ry,vertical section of one of the burners, its mantle and su ply pipe. Fig.4 is a face view of the'spoo s or's ring rollers or drums on which theouter glo e is supported. Fig, 5 is a transverse section of the same.

forated screens or diaphragms at the top of the burner; Fig. 7 is anenlarged sectional i'detail of the graduating and adjusting means forregulating thefuel sulpply. Fig. 8 is a sectionon line 8-,8 of ig. 7,with parts omitted. Fi 9 isa top plan view of the upper-guide 's'eeve-and bar. Fig. 10 is a section on line 10-10 of Fig. 7. Fig. 11 is afragmentary, vertical section'of a-lam emers'turned downwardly, butotherwise con 'structedas before. Fig. 12 is. an enlarged perspectiveview 'of one of' the supports for the inner globe. Fig. 13 is anenlarged frag- "Inentary detail'of a part of the support for the outerglobe. Fig. 14 is a fragmentary 1 detail of a part of"the support forthe outer globe showing the same in plan.

As shown .in the drawingstA, indicates the supply or system; ipefor coalgas. or other hydro-carbon fluid with which it is desired to connect thelamp embodying myinvention. Threadedon said pipe is the main supply pi eB, of the lam which extends 1' downwarc l y for a suitable ength and isprovided with longitudinal peripherally arranged slots or aperturesnearits lower end, which fit in a sleeve 1), having corresponding aperturesand alternate webs, whic 1, when said sleeve is rotated or partlyrotated, serve to partly close the apertures through the ipeB, and indonsequencaserves to regu-' ate the air' inlet thereinto. Rigidlysecured in the pipe'B; asshown in Fig. 7', is a pipe B which is openfatthe upper end and at 1ts 'lowerend tapers downwardly to a central,

small; circular aperture, as shown in 7,

Fig. 6 is a top plan viewof one of the persurrounded at a suitabledistance by a casing D, having ornamental open tops d, as shown in Fig.1, and having an ornamental or other wise perforated lower portionadapted to afford ready inlet for the air about its entire periphery.Extending through said outer shellor casing D, and threaded into themain stem or pipe B, is a. relatively heavy tube (1 which projectsthrough said shell and is internally threaded for a part of its lengthand through which extends the adjusting rod d, the inner end of whichextends beneath a downwardly tapered or conical collar 0 on the needleand. between which and the bar 0, is secured a pushing spring 0 tendingto hold the needle downwardly. Said adjusting rod or stem (Z is providedon its outer end with a small hand wheel d, whereby the same maybethreaded inwardly or outwardly. In threading the stem inwardly theneedle is obviously lifted to increase the How of gas through theneedlevalve and when threaded. outwardly the needle is permitted to descendunder the action of its spring 0, to close or partly close the needlevalve.

A sleeve d is rotatably engaged on thetubular rod (1 and is providedalso with the hand wheel (1 whereby the sleeve may be rotated. As shown,an arm (1 is provided on said sleeve at its inner end and engages in asuitable apertured bracket (Z on. the air regulating sleeve or tube 6,to partly'rotate the same on the main stem or supply pipe by rotation ofsaid hand wheel (1 As shown, said shell D, is provided with a closedbottom (1, through which the supply pipe E, for

the burners extends in axial alinement with the main stem B, beforedescribed, and, as shown in Figs. 1 and 2, tubes D are provided, oneabove each of the burners and in the present instance four in number,and, as shown, open at the top and affording vent flues to permit readyescape of the heated gases of combustion from the lamp and between thesame affording passages to permit to some extent, the heating of the airinflowing to the supply pipe. ()n the lower end of said supply pipe E,as shown in Figs. 1 and 3, is threaded a hollowiitting E, having as manytubular upturned arms c, as there are burners, the number, of course,corresponding with the number of vent tubes in the easing. Each of saidupturned arms a, as shown is provided at its top with an enlargement 6-affording a chamber and which, as shown, is overed at its top with aperforated or other screen 0 which serves to spray the gas into themantle. piece is used for this purpose having a downturned flangeadapted to fit over the walls of the chamber e, and of a size to fitloosely within the mantle. A rod e is provided centrally on said screenand affords the support for the mantle e.

Supported near the.upper end of each of the upturned branches (2, of theburner, are supporting clamps e, which are provided with an outwardlydirected finger c", adapted to extend beneath and afford the support forthe inner globe e, which, as shown is open As shown, a simple cap'readily support the weigh t of the outer globe F, which, as shown, isglobular in form, and open at the top and is engaged in the usual or anysuitable manner at its top in a globe ring-f which, as shown, isprovided wlth upwardly directed apertured lugs or eyes f, which registerwith apertures in the bottom d, of the upper casing, as shown in Figs.1, i3 and 14, and to whichv are engaged cables f, trained about saiddrums F and the lower ends of which are engaged in said eyes. As shown,a spring detent f, is provided on each of the eyes f and which, isadapted to extend through a slot in the bottom d, of the casing, andengages above the bottom (1, by a slight rotation of the supporting ringand out-er globe to assist in supporting the weight. of the globe.

\Vhile 1 have described the burners as directed upwardly, this is notessential inasmuch as the branches 0, may be turned d ownwardly andprovided with tubes (2, as shown in Fig. 11, adapted to support mantlese, is usual for inverted burners, in this event, however, to afford arequisite pressure chamber in the supply pipe, I have connected aglobular casing G, in the supply pipe and from which said branchesextend. In other respects the lamp is constructed as before described.

The 0 oration is as follows: To afford access to 0 1e burner, the outerglobe is simply pulled downwardly, unwinding the cables on the drums F,and lowering the globe sulliciently to permit of free access to theburner. Of course, the inner globe may be quickly removed by releasingsuch globe from the spring clips e, engaged on the arm a, to therespective burner. The combustion is as folltll) lift) lows The airisldrawii inwardly through the ejfull en, as shown in Fig. 1, or partlyclosed, t e egree of opening being regulated at, an time by means of thehand wheel'd, where y the dam er or regulating sleeve 6, isrotated toregu' ate the openings into the su ply pipe. At the same point the sup1y oft e gas with reference to the supply.

of t e air. is quickly adjusted byrotating the hand wheel d, andelevating or lowering the needle to regulate the degree'of o ening ofthe needle valve. Owin to the size of'the stem below the needle Va Va,and the length thereof, a large body of gas mixed with air in therequisite proportion is at all-times within the supply pipe andbranches, and 20 O regulable, such supply within the enlarged supplypipe serves at all times to maintain a owing to the, rate supply beingperfectly steady flameor light independent of those slight'variations inpressure constantly 00-.-

currmg in any gas system, but which in this instance all occur beyondthe needle valve. In consequence, notwithstandin such fluctuations andvariations, the supp y of gas be.-' low the'needle valve is alwayssufficient to maintain a steady and uniform combustion. This is, ofcourse,-- materially assisted by the air supply from below the burner.For this pur ose, a constant inflow of air takes place at t e to of theouter globe and owing to the constant exhausting of the air from saidglobe to the outflow of the heated roducts .globeis open, the burnersare thus conturned downward of combustion through the vent pipe, the.

cooler air is drawn downwardly from the top of the lobe and thenupwardly, to the burner, as shown by arrows in-Fig. '1), and, inasmuchas the entire-lower end of the inner stantly s v and 8 igh y warmed airsupporting an intense combustion atithe mantle, and thus, owing toape-rfect supply-of air both within and without the mantle, insuring theperfect combustion and precluding carbonization.

uppliedon the outer side with fresh The construction shown in Fig. 11 isiden-' tical with the exception that theburners are y and'to compensatefor the longer supply tube and to afiordarequisite quantity of thecombustible mixture an enlargement in'the supply pipejindicated by G,and afiording a lobular gas ch'amber,'is

provided. This maintains uniform deliveryprecludes'flickerto the burners2?.nd ti 1 sa arbomzatmm.

in tlie construction maybemade-without de parting from the principles ofmy invention,

I and I have shown but one of-several constructions possible embodyingthe same. principles. j-I therefore do not purpose limit- Of course, Iam aware that many changes ing this application for patent otherwisethan necessitated by the prior art;

I claim as my invention:

1. A lamp of the class described embracing a plurality of burners, a reulable supply pipe connected therewith an with a source for admittingair into the su ply pipe, flues for the burners in vertical a inementtherewithland around lwhich tfiie air fllows to the su y ie,a'vaveintesui eand *saiil pip e below the valve. afioi diri g a hhamber ofsufiicient capacity to afford a reserve fuel supply. 2; A amp of theclass described embracing a pluralit of burners, an independent flue foreach u'rner', a su ply pipe positioned between the flues, a va ve in thesupply pipe for controlling the delivery of gas there-' through, and avalve for admitting air into the supply pi e, said air passing aroundand between the ues to said admission valve. V 3. A lamp of the classdescribed embracing a plurality of burners, an independent flue foreachburner, a su ply pipe positioned between the flues, a va ve in thesupply pipe for controllin the delivery of gas therethrough, a. va vefor admitting air into the supply ipe, said air passing around andbetween t e flues to said admission valve, a casing surrounding theflues and rotatable .gas regulating. valve and the other the airadmission valve.

4; A lamp of the class described embracing a plurality of burners, anindependent flue for each burner, a casing around the fluesInantlesecured to each, a spray head for each burner,- a clamp securedto each burner, an

inner globe supported by-the clamps, a casing, spring controlleddrumstherein, a cable secured to each'drum, an outer globe and asupporting'ring therefor to which the cable is attached.

6.- A lamp embracing an inner and an 'out'er'globe, the formerop'en atits bottom,

extending into. the globes, a plurality pf burners supported on thelower end of the supply pipe, a vent pi e above each burner, aregulating valve for t e hydro-carbon fluid, a regulatin'gyvalve foradmittingrair to mix therewith, concentrically arranged means foractuating the same, said supply pipes below adjusting stems projecting,through one side of the casing adapted one for adjusting the thelatter'open at its top only, asupply pipe .70 of supply for theilluminating fluid, means means for actuating the same a soconcentrically arranged and a reserve chamber for the combustiblemixture. 1

8. A lamp embracing an inner and an outer globe, the former open at itsbottom,

means for yieldingly supporting the outer.

globe-to admit air between'the globes, a

supply pipe extending into the globes, a plura ity of burners supportedon the lower end of the supply pipe, a casing above the globes aperturedto admit air thereinto and means in the casing for supporting the meansfor globe. p I

9. A lamp embracing an inner and an outer globe, the former open at itsbottom, a supply pi e extending into the globes, a plurality ofurnerssupported on the lower end of the supply pipe, a casing above theburners, means journaled therein for sup orting the outer globe, a ventpi e opening rom each burner and spring 0 amps for detachably supportingthe inner globe.

10. -A lamp embracing an inner and an outer globe, means for supportingthe globes -to admit air therebetween, a plurality of burners in thelobes, a vent pi e above each burner, a supp y pipe provide with slotsat the lower end, a regulating valve inthe pipe above the slots for thehydro-carbon fluid, a pipe concentric with the supply pipe and ravingslots ada ted to: register wlth the slots in the supp y ipe, concentricstems, one for adjustin eac valve and a chamber for holding com ustiblegas communicating with the burners.

11. In a device of the class described a casing, a globe below the same,burners in the globe, a pipe for supplying fuel thereto, a reciprocatmgvalve for controlling the delivery of illuminating gas through thesupply pipe,

a rotatable valve for controlling the su ply of air delivered into thesupply pipe an independent concentric rotatable means for operating saidreciprocating and rotatable vizlves, and both operated from the sameace. p 12. In a device of the class described a casing, a globe belowthe same, burners in the globe, a;pipe for supplying fuel thereto areciprocating valvefor controlling the delivery of-illuminating gasthrough the su ply pipe, a rotatable valve for controlling t e supply .0en at the yieldingly supporting the outer of air delivered into thesupply pipe and independent rotatable means actuated from the samepoint, one for ad'usting the reciprocating valve and the ot er foradjusting the rotatable valve.

1.3. In a deviceof the class described a casing having a closed bottom,an outer globe, means su porting the outer globe to admit air into t etop) of the globe, an inner lobe ottorn to admit air t eret rough,burners in the inner globe, fiues extending through the casin one foreach burner, a supply pipe for t e burners ositioned centra between thefiues an extending paralle therewith and means for ad- 'mitting air intothe supply pipe in the casing between the flues causlng the air to beheated by the flues.

' 14. In a device of the class described a casing having a closedbottom, a supply pipe opening through the bottom, flues surrounding thesupply pipe also openin through the bottom, burners connected wit the suply pipe, drums in the casing, cables trained therearound, a globesupporting ring supported by the cables, means for automaticallyrotating the drums in one direction and a globe sup orted by the globering.

15.. In a' evice of the class described a ca s-- ing, a supply pipeextending theretln-ough, burners connected with the supply pipe, aninner globe open at the bottom,' means st cured to the burners adaptedto support tho inner globe and hold the same a must the bottom of thecasing, an outer glo e, means for supporting the same adapting the globeto be adjusted from the casm Without detaching the same and part of t 1esupporting means adapted to, automatically return the outer lobe tonormal.

16. In a-device of the class described a casing, a supply pipe, burnersconnected with yieldingly supporting the ring to admit air between thesame and bottom of the casing intotheglobe and spring members coartingwith the aforesaid ring supporting means for aiding in supporting thering.

' 17. In a device of the class described a casing aperturedto admit airthereinto and hav ing a closed bottom, a supply pi e extending throughthe casing and aperture in the casing to admit the air from the easinginto the su ply pipe, a sleeve concentric-witlrthe supp y pipe havingapertures to register with the apertures in said supply jpip'e, meansfor rotating the sleeve to vary the degree of opening of the aperturesin the supply pi e, a pipe in the supply ipe having a close end. exceptfor a sma l aperture, a needle valve for controlling the degree ofopening of said aperture and means for adjusting said needle valve;

18. In a device of the class described a cas- Hill the supply pipe belowthe valve in the pipe, 1

adjusting rods for actuating the'val ves' and each provided with an 0erating wheel,

burners communicating. w the pp yil.

pipe, and a globe inclosmg the bumersg 19. In a device of the classdescribed a cas ing, apertured to admit air into the Barney-a supply ipetherein a valvein the ipetf rcontrolling the feed of fuel through,

n a valve for admitting air from the casing Into adjusting rods foractuating the valves and.

each provided with I an operating wheel, burners communicating with thesupply pipe, a globe inclosing the burners, spraying eads fortheburners, mantles inclosing the s raying heads, a supporting ,ring forthe g obe andmeans rotatable in the casing for supporting the ring.

p testimony whereof I have-hereunto subscribed mynam'ein the sfcribingwitnesses}. I

' MORRIS I. COHEN.

presence-of two sub- Witnesses:

' K. E. HANNAH,'

the supplyfpipe below the valve in thep'ip,

LAWRENCE Rnmemim

